The standard enthalpy of formation of buckminsterfullerene, carbon(60)

The micro-calorimetry of C$\sb{60}$ has been performed on a series of pure samples, and the enthalpy of formation $\{\Delta\sb{\rm f}$H$\sp{\rm o}\sb{\rm m}$ (cr)$\}$ for C$\sb{60}$ (cr) was found to be 579 $\pm$ 3.35 kcal mol$\sp{-1}$, or 9.65 $\pm$ 0.06 kcal mol$\sp{-1}$ per carbon, relative to standard state graphite. This can be converted to the standard enthalpy of formation $\{\Delta\sb{f}$H$\sp{\rm o}\sb{\rm m}$(g)$\}$ for C$\sb{60}$ of 635 $\pm$ 6.0 kcal mol$\sp{-1}$, or 10.6 $\pm$ 0.10 kcal mol$\sp{-1}$ per carbon atom, via the standard enthalpy of sublimation $\Delta\sb{\rm c}\sp{\rm g}$H$\sp{\rm o}\sb{\rm m}$(298.15 K). In the preparation of these samples, methodologies for the synthesis, isolation, purification, and testing of fullerenes have been developed.

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application/pdf

dc.language.iso

eng

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Chemistry

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The standard enthalpy of formation of buckminsterfullerene, carbon(60)